ABSTRACT
Clinically, Spitz nevi usually appear as asymptomatic, dome-shaped, round to oval, firm nodules with a wide spectrum of colors ranging from translucent to purple, brown or black. The degree of pigmentation varies with the age of the patient and more darkly pigmented lesions are rare in children. Herein, we report an unusual case of pigmented Spitz nevus in a 7-year-old boy, which clinically resembles malignant melanoma.
Subject(s)
Child , Humans , Male , Melanoma , Nevus , Nevus, Epithelioid and Spindle Cell , PigmentationABSTRACT
The Laugier-Hunziker syndrome is a rare syndrome characterized by macular hyperpigmentation of the lips and buccal mucosa associated with melanonychia. Onset is usually in adult life and no consistent systemic associations have been reported. Here we report a 39-year-old wonam with a longitudinal pigmented band on a finger and pigmented macules on the lip. We suggest that this is the first report in Korea and the syndrome is presumably more common than recognized.
Subject(s)
Adult , Humans , Fingers , Hyperpigmentation , Korea , Lip , Mouth MucosaABSTRACT
Localized scleroderma is a connective-tissue disorder that is limited to the skin and subcutaneous tissue, sometimes involving muscles beneath the cutaneous lesions. Although it is usually a self-limiting disease, complications like growth failure, joint contractures, deformities and functional impairment may occur resulting in significant morbidity. Herein we report a 9-year-old girl who presented with hemiatrophy as a major clinical feature associated with widespread multiple hyperpigmented sclerotic plaques. The patient proved to be a relatively rare case of hemiatrophy secondary to extensive generalized morphea also having complicating features of joint contracture and growth failure of involved extremities.
Subject(s)
Child , Female , Humans , Congenital Abnormalities , Contracture , Extremities , Joints , Muscles , Scleroderma, Localized , Skin , Subcutaneous TissueABSTRACT
BACKGROUND: Animals with zoophilic dermatophytes are important sources of dermatophytoses in man, because zoophilic dermatophytes are frequently transmitted directly or indirectly from domestic and wild animals. Trichophyton(T.) mentogrophytes has a wide range of hosts. Among these, rodents are well-known reservoirs in many other countries. In our country a few sporadic reports of incidence in experimental rats have been reported, but there is no study on the incidence in wild rodents in Korea. OBJECTIVE: The purpose of this study is to investigate the role of wild rodents as a host of dermatophytes and keratinophilic fungi in Korea. METHODS: Forty-nine wild rodents (Apodemus(A.) agrarius; 44, Crocidura spp; 5) were captured from 6 different regions of Kyungi-do with Sherman traps. Fungi were isolated by using the Mackenzie's brush technique. RESULTS: 1. Isolation rate of dermatophytes from wild rodents in Korea was 16.3%. 2. T. mentagrophytes was isolated from six A. agrarius (12.2%). Isolation rates from dorsum hairs, ventral hairs and feet were 4.5%, 9.1% and 9.1% respectively 3. Other dermatophytes and related keratinophilic fungi isolated were Chrysosporium spp.(65.3%), Scopulariopsis spp.(10.2%) and T. terrestre(4.1%). 4. Chrysosporium. was the most frequently isolated species from four out of six Kyonggi-do regions ranging 58.3%~83.3%. Scopulaiopsis was isolated the most in Kumgwang-myun Ansung-gun, and T. terrestre in Kimpo-gun. CONCLUSION: These results suggest that wild rodents, especially A. agrarius may be the important reservoirs of T. mentagrophytes and other keratinophilic fungi in Korea.
Subject(s)
Animals , Rats , Animals, Wild , Arthrodermataceae , Chrysosporium , Foot , Fungi , Hair , Incidence , Korea , Rodentia , Scopulariopsis , TineaABSTRACT
BACKGROUND: Canine scabies is caused by an infestation of Sarcoptes scabiei var. canis (S. canis) in dogs and they can be transmitted to humans. Recently pet raising has been increasing in Korea and various parasitic infestations contracted from them have also been increasing including canine scabies. OBJECTIVE: The purpose of this study was to examine the clinical and histopathological features of experimental canine scabies. METHODS: Two dogs experimentally infested were observed for a year. They were examined physically and the numbers of S. cans were counted from scraping samples of the ear, leg and abdomen every 3 to 7 days and skin biopsies were taken. One was given systemic corticosteroids(Dogl) and the other was observed in its natural course(Dog2). RESULTS: Dogl-Clinically severely pruritic, markedly thick hyperkeratotic scales, crust and generalized erythema on the whole body developed with huge numbers(up to 754.9/100mg from scales of the abdomen) of mites, and histopathologically showed features similar to human crusted scabies. Dog2-Clinically showed milder features than Dogl including the number of S. canis(up to 242.6/100mg from scales of the ear), but histopathologically showed similar features with Dogl. Dog2 also showed a prompt response to one topical application of 20% benzyl benzoate solution. CONCLUSIONS: 1) The number of S. canis increased markedly in both normal and corticosteroidtreated dogs, although it was more significantly increased in the corticosteroid-treated one. 2) Histopathology showed features similar to classical scabies in the early stage but features of human crusted scabies in the full-blown stage. 3) Morphologically Sarcoptes canis differs from Sarcoptes scabiei var. hominis.
Subject(s)
Animals , Dogs , Humans , Abdomen , Benzoates , Biopsy , Ear , Erythema , Korea , Leg , Mites , Sarcoptes scabiei , Scabies , Skin , Weights and MeasuresABSTRACT
Fibrofolliculoma is a benign follicular neoplasm which usually occurs in multiple and rarely solitarily. We have found only seven cases of previous reports of solitary fibrofolliculomas worldwide and only two in Korean literature. Herein we report on a 40-year-old female patient with a solitary flesh-colored bean sized mass on the scalp which histopathologically proved to be a fibrofolliculoma.
Subject(s)
Adult , Female , Humans , ScalpABSTRACT
Melamine-formaldehyde resin is widely used in manufactur ing plastics, tableware, t,extile and paper finishing, laminates, electrical insulations, and adhesives throughout the world, Allergic contact dermatitis to this resin has rarely been reported worldwide and has not been reported in Korean literature. We report a case of occupational allergic contact dermatitis to melamine-formaldehyde resin in a 38-year-old man. He had been working for a month in a textile factory when pruritic multiple erythematous patches and placjues developed on the face, both forearms and dorsa of the hands. In the factory melamine-forrnldehyde resin was used for crease resistant finishing. A Patch test revealed a positive reaction to rnelamine-formaldehyde resin.
Subject(s)
Adult , Humans , Adhesives , Dermatitis, Allergic Contact , Forearm , Formaldehyde , Hand , Patch Tests , Plastics , TextilesABSTRACT
Inverted follicular keratosis is a benign epithelial tumor occurring most frequently on the face or scalp of older persons as a firm, skin-colored papule. It may rarely occur from a pre-existing nevus sebaceus as a secondary tumor. Herein we report a case of inverted follicular keratosis arising from a pre-existing nevus sebaceus in a 47-year-old male. He presented with a keratotic erythematous dome-shaped tumor which suddenly developed from a pre-existing yellowish papillomatous plaque on his scalp. Histopathological findings of the secondary lesion revealed a proliferating epithelial tumor with numous squamous eddies in the center, consistent with inverted follicular keratosis.
Subject(s)
Humans , Male , Middle Aged , Keratosis , Nevus , ScalpABSTRACT
Omphalith is a compaction of keratinous and sebaceous material in the deeply set umbilicus. It may be clinically mistaken for a malignant melanoma because of its pigmented surface and sudden appearance. However, careful probing and removal of this umbilical mass, followed by histopathological examination readily identifies its true nature. We describe a patient who presented with a firm, black umbilical mass diagnosed as an omphalith and reviewed the differential diagnosis of a firm, black umbilical mass.
Subject(s)
Humans , Diagnosis, Differential , Melanoma , UmbilicusABSTRACT
Acanthoma fissuratum is a localized thickening of the skin in response to pressure by an eyeglass frame and usually occurs on the retroauricular fold, superior auricular crease, or bridge of the nose. The definitive diagnosis can be confirmed by characteristic clinical and histopathological features in association with anamnestic data. Herein we report a case of acanthoma fissuratum developing on an unusual site-the mucosa of the upper lip and it was successfully treated with simple excision.